JP2000349897A - Earphone-shaped radio telephone set system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the transmission efficiency of a voice signal by uniting a microphone, a speaker, etc., into one, making a handset an earphone shape, separating the handset from a telephone set main body by radio and mounting a keypad on the telephone set main body. SOLUTION: In a handset in an earphone-shaped radio telephone system, a speaker housing part is formed projectingly from a base frame, and a microphone is provided internally at the end of an extended rod provided on another side face of the base frame. A keypad 202 is provided in the main body 200 of the earphone-shaped radio telephone set system, and a displaying part 203 where light emitting elements are arranged is formed at its adjacent position. The controlling part of the body 200 judges a hook-off state to be initialized, analyzes and processes information inputted from the keypad 202, controls the display state of the part 203, feeds supplied drive power to each configuration block and generally controls each configuration block at the same time. A station line matching part makes impedance with a station line matched and enables a telephone to be used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earphone type radio telephone system, and more particularly, to a telephone main body, a handset, and an automatic dialing device which are separated from each other.
The main body is configured with a keypad for dialing, the handset is configured as an earphone with a microphone, an antenna, and a speaker, and the automatic dialing device is configured with a keypad for dialing, so that mobile phone can be used. The present invention relates to an earphone type wireless telephone system which is easy and allows a user to make a call while operating more freely.

Also, the present invention provides an earphone in which an antenna and a voice guiding tube for guiding a voice signal are provided in an extension dedicated to a microphone extending from a handset to improve the efficiency of receiving and guiding a voice signal. The present invention relates to a mobile telephone system.

[0003]

2. Description of the Related Art Telephones are a typical means for communicating between users at long distances. Recently, telephones have evolved from wired systems to wireless systems in order to pursue convenience for users, and general telephones and portable telephones using wireless systems have become widely used.

[0004] The conventional wireless telephone has to be constrained when performing a telephone call while performing a business in a home or office, since the telephone must be supported while supporting the handset with one hand. In particular, when a driver talks in a running vehicle, it is necessary to stop the running vehicle before calling, and there is a problem in safety when the driver talks while driving. Furthermore, in certain European countries, it is a fact that the driver is legally restricted from using a mobile phone in a running vehicle.

In order to solve such inconvenience, wireless hand-free telephones have been proposed. When a wireless hands-free telephone is mounted on a vehicle, a microphone and a speaker connected to the telephone by wire are installed at predetermined positions inside the vehicle, and the user can talk with the other party by pressing the talk button on the telephone. Is done.

On the other hand, in a portable wireless hands-free telephone, the security of the contents of a call is maintained by the user wearing the telephone on a waist belt and using a wired earphone connected to the telephone.

[0007]

However, the conventional wireless hands-free telephone for a vehicle has a problem in terms of security because the contents of a user's call are exposed to the outside.

[0008] Further, the portable wireless hands-free telephone has the inconvenience that the user must always carry the telephone.

[0009] Further, in the conventional mobile and portable wireless hands-free telephones, an earphone or a microphone and a speaker are connected to the telephone by a wire, so that the active area of the user is limited. In particular, when performing other business during a call, the business was hindered by the wire derived from the telephone.

Accordingly, the present invention has been devised in view of such problems, and a first object is to integrate a microphone, a speaker, and an antenna to constitute a handset in the form of an earphone, and to provide a handset. To provide an earphone-type wireless telephone system that is convenient to use without restricting the user's active area by installing a keypad for dialing on the telephone body by separating the telephone and the telephone body wirelessly. It is in.

A second object of the present invention is to enable dialing through another automatic dialing device,
It is an object of the present invention to provide an earphone type wireless telephone system that can easily perform dialing even when a user is separated from a main body.

A third object of the present invention is to improve the transmission efficiency of a sound signal by installing a sound guide tube inside an extension to which a sound signal is input to strongly cope with external noise. Another object of the present invention is to provide an earphone type wireless telephone system including a handset having an antenna structure capable of obtaining a voice signal having a high transmission / reception rate for the same length.

[0013]

According to a feature of the present invention to achieve the above object, a main body connected to a central office line,
In an earphone type wireless telephone system including a handset configured to be capable of wireless communication with the main body, the handset is transmitted through a transmitting / receiving antenna for transmitting / receiving call information to / from the main body, and the handset antenna. A receiving frequency bandpass filter for filtering only a band of a received voice signal to be received in the voice signal, and a predetermined size allowing a user to recognize the received voice signal in a predetermined frequency band filtered by the receiving frequency bandpass filter A receiving amplifier that amplifies the received audio signal, a speaker that converts the received audio signal amplified by the receiving amplifier into a voice that can be identified by a user, and a microphone that converts the voice uttered by the user into an electrical transmission voice signal And amplifying the transmission audio signal input through the microphone by a predetermined magnitude. A width amplifier, an antenna matching filter for converting the transmission audio signal amplified by the transmission amplifier into a band different from the filtering band of the reception frequency band filter, and at the same time, preventing spurious, the transmission audio signal and the reception audio signal An anti-interference filter to prevent interference, and a call switch operable by the user.
Hook depending on the switching state of the call switch-
A hook-on signal generator for generating an on signal; a battery for selectively supplying driving power to the hook-on signal generator and the components according to a switching state of the call switch; A keypad in which a number of numeric buttons and function keys related to a call are arranged; a main body antenna for transmitting and receiving call information to and from the handset; and a hook-off state when a supply state of the hook-on signal is cut off. Initialized by judging the state,
Analyzing and processing the information input from the keypad, while controlling that the driving power supplied through the power connection terminal is supplied to each component in the main body,
A control unit that controls each component in the main body to execute a telephone function; a line matching unit that matches the impedance with the office line to enable telephone use; The amplified audio signal is transmitted to the handset through the main body antenna, and the amplified audio signal is transmitted to the handset, and the transmission audio signal received from the handset is amplified. A communication circuit unit for outputting, and a key input signal provided from the
And a first DTMF signal generator for modulating the signal and dialing.

The apparatus may further include an automatic dialing device for dialing a telephone number through the handset, wherein the automatic dialing device includes a plurality of numeric buttons and a second keypad on which at least a dialing button and a memory button are arranged. A memory for storing at least one or more pieces of telephone number information and temporarily storing the telephone number information input by a user, and detecting the telephone number information stored in the memory according to an input state of the second keypad. A central processing unit, a second DTMF signal generating unit that generates a DTMF signal corresponding to the telephone number information detected from the central processing unit, and the D generated from the second DTMF signal generating unit.
And a speaker that outputs the TMF signal as sound.

The central processing unit detects the telephone number information temporarily stored in the memory by inputting the dialing button in the automatic dialing device, and detects the telephone number information in the automatic dialing device. When the memory button and the number button are sequentially input, the telephone number information stored in the memory is detected in one-to-one correspondence with the input number button.

Here, the earphone type wireless telephone system is formed at a predetermined position of the main body, and transmits the driving power supplied from the power supply connection terminal to the handset when the handset and the main body are connected. (1) The battery charging terminal is formed at a point facing the first battery charging terminal, and the main body and the handset are coupled to supply the driving power transmitted from the first battery charging terminal to the battery to charge the battery. A second battery charging terminal.

Further, the main body further includes a display unit comprising at least one light emitting element for displaying an operation state of the main body, and the display unit displays at least a call function, a dialing function, and a charging function. Including a light emitting element.

According to another feature of the present invention, there is provided a main body which is connected to a central office and has a communication circuit therein, and a handset which is configured to be capable of wireless communication with the main body and has a microphone, a speaker and a battery. In the earphone type wireless telephone system including: a handset, a speaker storage portion protrudingly formed from a back surface of the basic frame so as to house the speaker, and a front surface of the basic frame so as to house the battery. A battery storage portion protruding from the base, a supporting portion extended from the basic frame to support the handset when the handset is worn on a user's ear, and a user receiving the handset. An extension extending in the direction in which the user's mouth is located when worn on the ear, a microphone installed at the end of the extension, and the battery A call switch operably installed by a user at a position adjacent to a storage section, wherein the main body is shaped like the handset at a predetermined position on a plane of the main body so that the handset is stored. A keypad in which a correspondingly processed storage groove is formed, in which a number button of 0-9, an * button, a # button, and various function buttons related to a call are arranged, and a predetermined position on a side surface of the main body. An antenna for the main body installed so as to be able to communicate wirelessly with the handset, a main line connection terminal connected to a main line, and a power supply connection terminal for supplying drive power to the main body.

[0019] The apparatus further includes an automatic dialing device for dialing a telephone number through the handset, wherein the automatic dialing device has at least numeric buttons 0-9 and *.
A second keypad in which a button, a # button, a dialing button, and a memory button are arranged, and a speaker that outputs a predetermined dial tone according to an input state of the keypad.

When the handset is stored in the main body,
A third battery charging terminal formed at a position adjacent to the speaker housing so as to receive the driving power for charging the battery from the main body;
A fourth battery charging terminal formed at a predetermined position of the main body corresponding to the third battery charging terminal to provide the driving power to the third battery charging terminal when the handset is stored in the main body; Further included.

The main body further includes a display unit including at least one or more light emitting elements for displaying an operation state of the main body, and the display unit has at least a call function, a dialing function, and a charging function. Including a light emitting element for displaying.

Here, the extension includes a microphone line for electrically connecting the microphone and the communication circuit in the basic frame, and an antenna for transmitting and receiving telephone information so that the handset and the main body can perform mutual wireless communication.

The extension is provided with a sound collecting unit installed at the end thereof for collecting sounds uttered by the user, and a sound guiding tube for transmitting the sounds collected by the sound collecting unit to the microphone in the handset. Connected to the receiving frequency band filter in the handset so that voice signals can be transmitted to and received from the main unit, and an antenna disposed outside the voice guiding tube, It includes a sound collection unit, a sound guide tube, and a buffer protection tube for protecting the antenna from impact.

The sound guide tube is made of a non-conductive material so as to prevent interference with the antenna.
Its material is PVC.

The sound guide tube has at least one of its inner surface and outer surface plated with a predetermined metal so as to improve the sound induction efficiency. Preferably, the predetermined metal is gold or gold. One of the silver.

Preferably, the antenna is in the form of a coil, and the sound guide tube is wound a number of times in a spiral form along the outer peripheral surface.

Further, the main body further includes a fixing member attached to a predetermined position of the storage groove so as to prevent the handset from being detached when the handset is stored in the storage groove of the main body. The fixing member includes a metal member installed at a position adjacent to the third battery charging terminal of the handset, and a magnet attached at a position facing the metal member.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an earphone type wireless telephone system according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1A is a front view of a handset in an earphone type wireless telephone system to which the present invention is applied, and FIG.
1 (B) is a rear view of a handset in the earphone type wireless telephone system to which the present invention is applied, FIG. 2 is a structural diagram of a main body in the earphone type wireless telephone system to which the present invention is applied, FIG. 3 is a structural view of an automatic dialing device in an earphone type wireless telephone system to which the present invention is applied, and FIG. 4 is a handset antenna shown in FIGS. 1 (A) and 1 (B). FIG. 5 is an overall conceptual diagram of an earphone type wireless telephone system to which the present invention is applied, FIG. 6 is a schematic block diagram of the handset shown in FIG. 5, and FIG. FIG. 5 is a schematic block diagram of the main body illustrated in FIG. 5, and FIG. 8 is a schematic block diagram of the automatic dialing device illustrated in FIG.

As shown in FIG. 1, a handset 100 in an earphone type wireless telephone system to which the present invention is applied.
On the back of the thin basic frame 101, a speaker housing 102 is mounted on the basic frame 1 such that a speaker that is inserted into a user's ear and outputs a received audio signal is installed therein.
Projected from 01, on the front of the basic frame 101,
A battery housing 103 is formed so as to protrude from the basic frame 101 so that a battery for supplying driving power for the handset 100 is installed therein. Also, on one side of the basic frame 101, when the user wears the handset 100 in his ear, the handset 1
A support portion 104 for supporting 00 is formed, and an extension 105 extended by the distance from the user's ear to the mouth is installed on the other side of the basic frame 101. A microphone 106 for converting a person's voice into an electric signal is provided. In addition, a call switch 107 that allows a user to select a call function is installed at a position adjacent to the battery storage unit 103, and a handset 100 is stored in the main body 200 (FIG. 2) at a position adjacent to the speaker 102. The battery charging terminal 10 connected to the battery charging terminal (201 in FIG. 2) of the main body 200 and receiving the drive power to charge the battery.
8 are configured.

Referring to FIG. 2, in the earphone type wireless telephone system to which the present invention is applied, a main body 200 includes a number button of 0-9, an * button, a # button, and a A keypad 202 in which various function buttons related to the keypad 202 are arranged is installed, and a number of light emitting elements are arranged in a position adjacent to the keypad 202 to display an operation state of the telephone so that a user can easily identify it. The configured display unit 203 is configured. Also, a main body antenna 204 is installed at a predetermined position on the side surface of the main body 200 so as to be able to wirelessly communicate with the handset 100, and the handset 100 is stored at a predetermined position on the plane of the main body 200. A storage groove 205 processed to correspond to the shape of the handset 100 is formed.

At this time, when the handset 100 is stored in the storage groove 205, a battery charging terminal 201 for charging the battery in the handset 100 is formed. Handset 100 is storage groove
A magnet 206 is attached to prevent the handset 100 from falling off when stored in the 205. A station line connection terminal 207 to which a station line is connected and a power connection terminal 208 to which a drive power for the body 200 is supplied are formed on one side of the main body 200.

As shown in FIG. 3, in the earphone type wireless telephone system to which the present invention is applied, an automatic dialing device 300 is provided in front of a similar rectangular frame 301 having a thin shape. A keypad 302 in which a number of function buttons such as a number button, an * button, a # button, a dialing button, and a memory button are arranged is provided. One side of the automatic dialing apparatus 300 allows a user to dial. By operating the button or the automatic dialing button, a speaker 303 that generates a dialing signal (DTMF signal) corresponding to the input number button, * button, and # button is configured.

At this time, as shown in FIG. 4, the extension 105 extended from the handset 100 retains the shape of the extension 105 and, at the same time, uses a reinforcing iron core to transmit and receive the contents of a call with the main body 200. And a microphone line 110 connected to the microphone 106 and providing a user's voice signal supplied through the microphone 106 to a functional block in the handset 100.

As shown in FIG. 5, the earphone type radio telephone system to which the present invention having the above-mentioned structure is applied includes a handset 100, a main body 200 and an automatic dialing device.
300 are configured to be freely communicable wirelessly within a predetermined communicable range.

On the other hand, the internal configuration of the handset 100 will be described with reference to FIG. 6. The reception frequency band filter 111 includes a band of a sound signal to be received among the sound signals transmitted through the handset antenna 109. Only the band pass filter (band pass filter: BP
F).

The receiving amplifier 112 amplifies the audio signal in the predetermined frequency band filtered by the receiving frequency band filter 111 to a predetermined size that can be recognized by the user, and outputs the amplified signal to the speaker 113.

The transmission amplifier 114 amplifies the audio signal to a predetermined size so that a sufficient gain can be obtained even in the process of wirelessly transmitting and receiving the user's audio signal input through the microphone 106, and then amplifies the antenna signal. Output to 115.

The antenna matching filter 115 is connected to the transmission amplifier 1
The audio signal amplified by 14 is received by a reception frequency bandpass filter 111.
, And transmits the signal to the handset antenna 109 after matching the impedance (impedance) with the handset antenna 109 and preventing spurious.

The call switch 107 is installed at a predetermined position of the handset 100, and has a battery depending on a switching state.
Hook-on signal generator 1 controls the state in which the power supplied from 116 is supplied to each component of handset 100.
17 operating states are controlled.

The hook-on signal generating unit 117 generates a hook-on signal in response to the application of power supplied from the battery 116 when the user turns off the call switch 107 and sends the signal to the antenna 109. . Further, when the user turns on the call switch 107, the power supply from the battery 116 is cut off, and the generation of the hook-on signal is stopped.

The battery 116 supplies power to each component in the handset 100 by a discharging action, and when the handset 100 is inserted into the storage groove 205 of the main body 200, the main body 200 and the handset 1
When the battery charging terminals 108 and 201 installed at 00 are connected to each other, the battery is charged by receiving the drive power supplied through the power supply connection terminal 208 of the main body 200.

The anti-interference filter 118 prevents mutual interference of voice signals transmitted and received through the handset antenna 109.

The internal configuration of the main body 200 will be described with reference to FIG. 7. The control unit 209 determines the hook-off state by interrupting the supply state of the hook-on signal, and initializes the keypad. Analyze and process the information input from 202, control the display state of the display unit 203, supply the driving power supplied through the power connection terminal 208 to each component block, and at the same time, each component for the telephone function Take overall control of the block. In addition, the office line matching unit 210 matches the impedance with the office line to enable telephone use.

The speech circuit unit 211 amplifies the audio signal received by the local line matching unit 210 and transmits the amplified audio signal to the handset 100 via the main unit antenna 204, and receives the signal from the handset 100. The voice signal is amplified and the amplified voice signal is transmitted to the local line matching unit 210 to enable a call.

The DTMF (dual tone multi-frequency) signal generating section 212 modulates a key input signal provided from the keypad 202 into a DTMF signal and transmits the DTMF signal to the communication circuit section 211 to enable dialing.

Referring to FIG. 8, the internal structure of the automatic dialing apparatus 300 will be described. The keypad 302 includes a dialing button, a memory button, a number button, an * button, and a # button.

The central processing unit 304 controls the DTMF signal generator 305 in response to the input signal input from the keypad 302. That is, the central processing unit 304 stores the telephone number information corresponding to the input button by the user inputting the number button, the * button, and the # button,
The stored telephone number information is continuously transmitted to the DTMF signal generator 305 when the user inputs a dialing button. Also, when the user sequentially inputs the memory button and the number button, the phone number information corresponding to the number button is detected from the phone number information stored in the memory 306, and the corresponding phone number information is transmitted to the DTMF signal. Output to the generation unit 305.

The memory 306 stores a plurality of telephone number information in the form of a look-up table so as to correspond to the number buttons one-to-one, and stores the telephone number information corresponding to the number buttons under the control of the central processing unit 304. Detect and transmit it to the central processing unit 304.

A DTMF signal generator 305 generates a DTMF signal for dialing through a control signal output from the central processing unit 304 or telephone number information, and
Output to

The operation of the present invention configured as described above will be described as follows.

<Call Standby Mode> When the call switch 107 is turned off while the user is wearing the handset, the power generated from the battery 116 is supplied to the hook-on signal generation unit 117, and the hook is turned on. -The ON signal generator 117 generates a preset hook-on signal and provides it to the interference prevention filter 118, and the interference prevention filter 118 removes an interference component (interference wave) included in the hook-on signal. Later, the signal is transmitted to the main body 200 through the handset antenna 109. Body 20
The control unit 209 in 0 receives the input of the hook-on signal through the main body antenna 204 and is switched to the call standby mode.

<Talk mode> When a ring signal is detected through the office line, the control unit 209 controls the telephone bell to sound through a buzzer (not shown) and simultaneously displays the display unit.
The call light emitting element in 203 is controlled to blink at a predetermined cycle, and the user recognizes the telephone bell and turns on the call switch 107 of the handset 100, thereby outputting the call from the battery 116. No further drive power is supplied to the hook-on signal generator 117. Therefore, the control unit 209 in the main body 200 detects that the hook-off state is established, and activates the communication circuit unit 211 in the main body 200. Also, a communication path with the other party is set up, the communication is switched to a communication enabled state, and the audio signal supplied through the office line is sent to the office line matching unit.
210, and the handset 10
After being modulated to a predetermined reception frequency band recognizable by 0, it is transmitted to the outside through the main body antenna 204. At this time, the light emitting element for communication in the display unit 203 maintains the lighting state.

When a voice signal is received by the handset antenna 109, only a predetermined frequency band is filtered by the reception frequency band filter 111 and output to the reception amplifier 112. The reception amplifier 112 is a reception frequency band-pass filter 1
The audio signal supplied through 11 is amplified to a predetermined size that can be recognized by the user, and then output to the speaker 113.
Therefore, the user can hear the voice of the other party.

When the user generates a sound toward the microphone 106, the sound is modulated into an electric sound signal by the microphone 106, amplified by the transmission amplifier 114 to a predetermined size, and then by the antenna matching filter 115. Modulated to a frequency band different from the reception frequency. The modulated audio signal is transmitted to main body 200 through handset antenna 109. At this time, the interference prevention filter 118 filters an interference signal component so as to prevent interference between the transmitted audio signal and the received audio signal.

When a voice signal is received through the main body antenna 204, the control unit 209 re-amplifies the voice signal through the communication circuit unit 211 to a predetermined size that can be recognized by the switching center, and supplies the amplified signal to the local line matching unit 210. The line matching unit 210 is
By transmitting the audio signal supplied from 211 to the office line, the other party can hear the user's voice.

<Dialing Mode> When the user intends to dial using the keypad 202 provided in the main body 200, the user turns on the call switch 107 attached to the handset 100. The main body 200 is switched to the call waiting mode. Thereafter, when a button to be dialed is input using the numeric buttons, the * button, and the # button in the keypad 202, the signal is transmitted to the control unit 209.
Are sequentially supplied. The control unit 209 turns on the dialing light emitting element in the display unit 203 every time telephone number information is input from the keypad 202 to indicate that the corresponding button is normally input, and displays a DTMF signal generation unit. By controlling 212, a DTMF signal corresponding to the inputted telephone number information is controlled to be generated. The DTMF signal generated from the DTMF signal generation unit 212 is transmitted to the office line through the communication circuit unit 211 and the office line matching unit 210, thereby forming a communication path with the other party corresponding to the corresponding telephone number information.

If the user has an automatic dialing device 300
When the user tries to dial using, when the user turns on the call switch 107 of the handset 100,
As described above, the main body 200 is switched to the call waiting mode,
Thereafter, when the user sequentially inputs a number to be dialed or sequentially inputs a memory button and a number button to select the corresponding telephone number information stored in the memory 306, the selected telephone number information is obtained. Is temporarily stored in a buffer area of the memory 306, and when the user inputs the dialing button after bringing the automatic dialing apparatus 300 close to the microphone 106 of the handset 100, the corresponding telephone number information is stored in the central processing unit 304. Through the DTMF signal generator 305.

The DTMF signal generation unit 305 outputs a DTMF signal corresponding to telephone number information continuously input through the central processing unit 304.
A signal is generated and output to the speaker 303. Therefore, the speaker 303 outputs a DTMF signal corresponding to the telephone number, and the signal is transmitted to the handset 10 located nearby.
0 is received through the microphone 106. Thereafter, the DTMF signal is transmitted to the main unit 200 in the same manner as in the above-described process, and the DTMF signal transmitted to the main unit 200 is transmitted through the communication circuit unit 211 and the local line matching unit 210 via the local line. Therefore, a communication path with the other party corresponding to the corresponding telephone number information input by the user is formed.

<Charging Mode> When the user places the handset 100 in the storage groove 205 in the main body 200 to charge the battery 116 in the handset 100, the speaker 113 or the speaker 113 of the handset 100 made of a metal component is usually used. Speaker compartment 10
The handset 100 is fixed by being housed in the housing groove 205 of the main body 200 by the 2 and the magnet in the main body 200. At this time, since the battery charging terminal 108 of the handset 100 and the battery charging terminal 201 of the main body 200 are formed at positions facing each other, the battery charging terminal 108 of the handset 100 and the battery charging terminal 201 of the main body 200 are interconnected. Then, the driving power supplied through the power connection terminal 208 is supplied to the battery 116 through the battery charging terminals 201 and 108, so that the battery 116 is charged. At this time, the control unit 209 controls so that the charging light emitting element in the display unit 203 is turned on to display the state of charge of the battery 116.

FIG. 9 is a partial cutaway view of another embodiment of the handset antenna shown in FIG.

Referring to FIG. 9, at one end of the extension 105, there is formed a sound collecting unit 119 for collecting voices uttered by the user. Is connected to a microphone 121 configured in the handset.
At this time, the sound guide tube 120 is made of non-conductive PVC (poly vinyl).
At least one of the inner and outer surfaces of the sound guide tube 120 is plated with gold or silver.

On the other hand, a coil antenna 122 in the form of a spring is wound a large number of times outside the voice guiding tube 120 along the outer peripheral surface of the voice guiding tube 120, and the voice guiding tube 120 and the coil are provided outside the coil antenna 122. A buffer protection tube 123, which is a non-conductor for protecting the antenna 122 from impact, is covered. At this time, the coil antenna 122 is connected to the reception frequency band filter 111 in the handset 100.

That is, according to the present invention configured as described above, after the user's voice collected by the sound collecting unit 119 is guided to the microphone 121 through the voice guiding tube 120,
Is processed by the audio signal. Here, the voice guide tube 120
The metal (gold or silver) applied to the surface serves to soften the surface of the sound guide tube 120 to minimize the loss of sound, so that the sound is quickly and without loss within the guide tube 120 without loss. It is transmitted to 121. In addition, since no external noise is introduced, clean speech quality is preserved.

The coil antenna 122 transmits the audio signal generated from the transmission / reception circuit to the main unit or receives the audio signal transmitted from the main unit and transmits it to the transmission / reception circuit. At this time, since the coil antenna 122 is wound in the form of a coil outside the audio guiding tube 120, the longer coil antenna 122 can be installed with the extension 105 having the same length, thereby maximizing the transmission / reception efficiency of the audio signal. You.

In particular, since the sound guide tube 120 is made of a non-conductor, interference between the coil antenna 122 and the sound guide tube 120 can be prevented.

Further, since the outside of the coil antenna 122 is covered with the buffer protection tube 123 and the buffer protection tube 123 absorbs an external impact, the coil antenna 122 is not easily damaged. At this time, extended extension
It is preferable that the sound collecting unit 119 of the 105 has a length that reaches around the mouth of the user.

Although the preferred embodiment of the present invention has been described in detail, those skilled in the art to which the present invention pertains have the spirit of the present invention as defined in the appended claims. The present invention can be variously modified or changed without departing from the scope and scope. That is,
Although the configuration and operation of the earphone type wireless telephone system according to the present invention have been limited to the desk telephone,
This can be applied to a wireless telephone for a vehicle, and since such a modification can be easily implemented by the above-described configuration and operation, another additional description will be omitted.

[0069]

As described above, according to the present invention, by guiding the user's voice to the microphone through the voice guide tube, the transmission efficiency of the voice signal is improved in response to the external noise, and the coil shape is improved. Since the antenna is wound many times outside the audio guide tube, a high transmission / reception rate of the audio signal for the same length can be obtained.

Also, since dialing can be performed using the portable automatic dialing device, even when the user is away from the main body, dialing can be easily performed, so that the user's action area is not limited, and during a call. Can also perform other tasks conveniently.

Further, when the earphone type radio telephone system is applied to a vehicle, there is an advantage in terms of security because the contents of the user's call are not exposed to the outside, and the handset, the handset and the talk button have an earphone type handset. Since it is integrally formed, the configuration is simple and portable.

[Brief description of the drawings]

FIG. 1A is a front view of a handset in an earphone type radio telephone system to which the present invention is applied, and FIG. 1B is a front view of an earphone type radio telephone system to which the present invention is applied. It is a rear view of a handset inside.

FIG. 2 is a structural view of a main body in the earphone type wireless telephone system to which the present invention is applied;

FIG. 3 is a structural diagram of an automatic dialing device in an earphone type wireless telephone system to which the present invention is applied.

FIG. 4 is a partial cutaway view of the handset antenna shown in FIG. 1 according to an embodiment;

FIG. 5 is an overall conceptual diagram of an earphone type wireless telephone system to which the present invention is applied.

FIG. 6 is a schematic block diagram of the main body shown in FIG. 5;

FIG. 7 is a schematic block diagram of the main body shown in FIG. 5;

FIG. 8 is a schematic block diagram of the automatic dialing device shown in FIG. 5;

FIG. 9 is a partial cutaway view of another embodiment of the handset antenna shown in FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Handset 101 Basic frame 102 Speaker storage 103 Battery storage 104 Support 105 Extension 106, 121 Microphone 107 Call switch 108, 201 Battery charging terminal 109 Handset antenna 110 Microphone line 111 Reception frequency band filter 112 Reception amplifier 113 Speaker 114 Transmission amplifier 115 Antenna matching filter 116 Battery 117 Hook-on signal generator 118 Interference prevention filter 119 Sound collector 120 Sound guide tube 122 Coil antenna 123 Buffer protection tube 200 Main body 202 Keypad 203 Display unit 204 Main body antenna 205 Storage Groove 206 Magnet 207 Office line connection terminal 208 Power supply connection terminal 209 Control unit 210 Office line matching unit 211 Communication circuit unit 212, 305 DTMF signal Generator 300 automatic dialing device 301 frame 302 keypad 303 speaker 304 central processing unit 306 memory

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 1/05 H04B 7/26 V 1/23 109Q

Claims (18)

[Claims] 1. An earphone-type wireless telephone system including a main unit connected to an office line and a handset configured to be capable of wireless communication with the main unit, wherein the handset transmits and receives call information to and from the main unit. A reception frequency band filter for filtering only a band of a reception voice signal to be received among voice signals transmitted through the handset antenna, and a predetermined frequency filtered by the reception frequency band filter. A receiving amplifier that amplifies the received voice signal in a band to a predetermined size that can be recognized by a user, a speaker that converts the received voice signal amplified by the receiving amplifier into voice that can be identified by the user, A microphone that converts the uttered voice into an electrical transmission voice signal, and the microphone input through the microphone; A transmission amplifier that amplifies a transmission voice signal by a predetermined size, and an antenna matching filter that converts the transmission voice signal amplified by the transmission amplifier into a band different from the filtering band of the reception frequency band filter and simultaneously prevents spurious. ,
An interference prevention filter that prevents interference between the transmission audio signal and the reception audio signal, a call switch operable by a user, and a hook-on signal generation unit that generates a hook-on signal according to a switching state of the call switch. ,
The main body includes a hook-on signal generating unit and a battery for selectively supplying driving power to the components according to a switching state of the call switch. Are arranged, a main body antenna for transmitting and receiving call information to and from the handset, and a hook-off state is determined by shutting off a supply state of the hook-on signal to initialize the keypad. Analyzes and processes the information input from the PC to control that the driving power supplied through the power supply connection terminal is supplied to each component in the main body. A control unit that controls the execution of the telephone line, a telephone line matching unit that matches the impedance of the telephone line and enables telephone use, and a telephone line received by the telephone line matching unit. The amplified audio signal is transmitted to the handset through the main body antenna, and the transmitted audio signal received from the handset is amplified and output to the local line matching unit. An earphone type wireless telephone system comprising: a communication circuit unit; and a first DTMF signal generating unit for modulating a key input signal provided from the first keypad into a DTMF signal for dialing. 2. An automatic dialing device for dialing a telephone number through the handset, wherein the automatic dialing device has a plurality of number buttons and a second keypad in which at least a dialing button and a memory button are arranged. A memory for storing at least one or more pieces of telephone number information and temporarily storing the telephone number information input by a user, and detecting the telephone number information stored in the memory according to an input state of the second keypad. A central processing unit, and a second DTMF for generating a DTMF signal corresponding to the telephone number information detected from the central processing unit
2. The earphone type wireless telephone system according to claim 1, further comprising: a signal generating unit; and a speaker that outputs the DTMF signal generated from the second DTMF signal generating unit as a voice. 3. The central processing unit detects the telephone number information temporarily stored in the memory when the dialing button in the automatic dialing device is input, and detects the telephone number information in the automatic dialing device. And detecting the telephone number information stored in the memory in one-to-one correspondence with the inputted number buttons by sequentially inputting the memory button and the number buttons. 2. The earphone type wireless telephone system described in 2. 4. A first battery charging terminal formed at a predetermined position of the main body and transmitting drive power supplied from the power connection terminal to the handset when the handset and the main body are connected. Formed at a position facing the first battery charging terminal, and the main body and the handset are coupled to supply driving power transmitted from the first battery charging terminal to the battery. 2. The earphone type wireless telephone system according to claim 1, further comprising a second battery charging terminal for charging a battery. 5. The main body further includes a display unit including at least one light emitting element for displaying an operation state of the main body, wherein the display unit has at least a call function, a dialing function, and a charge function. 3. The earphone type wireless telephone system according to claim 1, further comprising a light emitting element for displaying a function. 6. An earphone-type radio telephone comprising: a main body connected to a central office line and having a communication circuit therein; and a handset configured to enable wireless communication with the main body and having a microphone, a speaker, and a battery installed therein. In the system, the handset includes a speaker storage portion protruding from a rear surface of the basic frame so as to house the speaker, and a battery storage portion protruding from the front surface of the basic frame so as to house the battery. Part, a support portion extended from the basic frame to support the handset when the handset is worn on the user's ear, and a support part that is used when the handset is worn on the user's ear. Extension extending in the direction in which the mouth of the person is located, a microphone installed at the end of the extension, and a position adjacent to the battery storage unit. A call switch operably installed by a user, wherein the main body is processed at a predetermined position on a plane of the main body so as to accommodate the handset so as to correspond to the shape of the handset. A first keypad in which a storage groove is formed, in which 0-9 numeric buttons, an * button, a # button, and various function buttons related to a call are arranged, and the handset at a predetermined position on a side surface of the main body. An earphone type radio telephone comprising: an antenna for a main body installed so as to be able to communicate wirelessly, a main line connection terminal connected to a main line, and a power supply connection terminal for supplying drive power to the main body. system. 7. An automatic dialing device for dialing a telephone number through the handset, wherein the automatic dialing device has at least 0-9 numeric buttons, * button, # button, dialing button, and memory button. 7. The earphone type wireless telephone system according to claim 6, further comprising: a second keypad arranged, and a speaker that outputs a predetermined dial tone in accordance with an input state of the keypad. 8. A third power supply for charging the battery is received from the main body when the handset is stored in the main body. A battery charging terminal, and a battery charging terminal, which is formed at a predetermined position of the main body corresponding to the third battery charging terminal when the handset is stored in the main body, and provides the driving power to the third battery charging terminal. 7. The earphone type wireless telephone system according to claim 6, further comprising: four battery charging terminals. 9. The main body further includes a display unit including at least one light emitting element for displaying an operation state of the main body, wherein the display unit has at least a call function, a dialing function, and a charge function. 7. The earphone type wireless telephone system according to claim 6, further comprising a light emitting element for displaying a function. 10. The extension line includes: a microphone line for electrically connecting the microphone to a communication circuit in the basic frame; and an antenna line for transmitting and receiving telephone information so that the handset and the main body can perform mutual wireless communication. Claims comprising:
6. The earphone type wireless telephone system according to 6. 11. The extension unit is disposed at an end of the extension unit and collects a voice uttered by a user, and the sound collected by the sound collection unit is transmitted to the handset within the handset. A sound guide tube for transmitting to a microphone; an antenna connected to the reception frequency band filter in the handset so as to transmit and receive a sound signal to and from the main body; and an antenna disposed outside the sound guide tube; 7. The earphone according to claim 6, wherein the earphone includes a sound collecting unit, a buffer protection tube for covering the sound guide tube and the antenna from external impact by covering the unit, the sound guide tube and the antenna. Mobile phone system. 12. The earphone-type wireless telephone system according to claim 11, wherein the sound guide tube is made of a non-conductive material so as to prevent interference with the antenna. 13. The earphone type wireless telephone system according to claim 12, wherein the voice guiding tube is made of PVC. 14. The sound guide tube according to claim 1, wherein at least one of inner and outer surfaces of the sound guide tube is plated with a predetermined metal to improve the sound guide efficiency. 12. The earphone type wireless telephone system according to item 12. 15. The earphone type wireless telephone system according to claim 14, wherein the predetermined metal is one of gold and silver. 16. The earphone-type wireless telephone system according to claim 11, wherein the antenna has a coil shape and is wound many times in a spiral shape along an outer peripheral surface of the audio guiding tube. 17. A fixing member attached to a predetermined position of the storage groove so as to prevent the handset from being detached when the handset is stored in the storage groove of the main body. 7. The earphone type wireless telephone system according to claim 6, further comprising: 18. The fixed member according to claim 3, wherein the fixed member is a third one of the handset.
18. The earphone type wireless telephone system according to claim 17, comprising: a metal member installed at a position adjacent to the battery charging terminal; and a magnet attached to a position facing the metal member.